Finding the Fourth Proportional to 316,283.44, 474,372.30 and 138,742.78
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Solution
The fourth proportional to 316,283.44, 474,372.30 and 138,742.78 is: 208,090.98
Step by Step Solution
- Step 1: Write the proportion equation
316,283.44 : 474,372.30 = 138,742.78 : x - Step 2: Convert to fraction form
316,283.44/474,372.30 = 138,742.78/x - Step 3: Cross multiply
316,283.44x = 474,372.30 × 138,742.78 - Step 4: Simplify right side
316,283.44x = 65,815,729,285.13 - Step 5: Solve for x
x = 65,815,729,285.13/316,283.44 - Step 6: Final answer
x = 208,090.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.